Springboot发送邮件-编程知识

博主介绍：✌全网粉丝3W+，全栈开发工程师，从事多年软件开发，在大厂呆过。持有软件中级、六级等证书。可提供微服务项目搭建与毕业项目实战，博主也曾写过优秀论文，查重率极低，在这方面有丰富的经验✌

博主作品：《Java项目案例》主要基于SpringBoot+MyBatis/MyBatis-plus+MySQL+Vue等前后端分离项目，可以在左边的分类专栏找到更多项目。《Uniapp项目案例》有几个有uniapp教程，企业实战开发。《微服务实战》专栏是本人的实战经验总结，《Spring家族及微服务系列》专注Spring、SpringMVC、SpringBoot、SpringCloud系列、Nacos等源码解读、热门面试题、架构设计等。除此之外还有不少文章等你来细细品味，更多惊喜等着你哦

🍅开源项目免费哦(有vue2与vue3版本)：点击这里克隆或者下载 🍅

🍅文末获取联系🍅精彩专栏推荐订阅👇🏻👇🏻 不然下次找不到哟

Java项目案例《100套》

https://blog.csdn.net/qq_57756904/category_12173599.html
uniapp小程序《100套》

https://blog.csdn.net/qq_57756904/category_12199600.html

编辑

一、获取授权码

1、以QQ邮箱为例，页面首部找到设置

二、SpringBoot集成邮件发送

1、环境配置

2、代码编写

三、测试邮件发送

一、获取授权码

1、以QQ邮箱为例，页面首部找到设置

2、开启POP3/SMTP服务

如果服务不是开启状态需要开启，服务开启状态可以点击管理服务去获取授权码。

获取授权码这次本人需要绑定手机号，绑定手机后就可以点击生成授权码

二、SpringBoot集成邮件发送

1、环境配置

添加依赖

<!-- springboot 邮件mail --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-mail</artifactId><version>${springboot.version}</version></dependency>

application.properties

# 邮件
spring.mail.default-encoding= utf-8
# 配置 SMTP 服务器地址
spring.mail.host= smtp.qq.com
#发送方邮件名
spring.mail.username= xxxx@qq.com
#授权码
spring.mail.password= xxxxxx

application.yml(与application.properties任选其一既可)

spring:#邮箱基本配置mail:#配置smtp服务主机地址host: smtp.qq.com#发送者邮箱username: xxxxxxx@qq.com#配置密码,注意不是真正的密码，而是刚刚申请到的授权码password: xxxxxxxxxxx#端口号465或587port: 587#默认的邮件编码为UTF-8default-encoding: UTF-8#其他参数properties:mail:# 配置SSL 加密工厂smtp:ssl:# 本地测试，先放开sslenable: falserequired: falsesocketFactory:class: javax.net.ssl.SSLSocketFactory# 开启debug模式，这样邮件发送过程的日志会在控制台打印出来，方便排查错误debug: true

2、代码编写

MailRequest实体

package com.ceam.exam.dto;import java.io.Serializable;/*** @author CeaM* 2023/7/17*/
public class MailRequest implements Serializable {/*** 接收人*/private String sendTo;/***  邮件主题*/private String subject;/***  邮件内容*/private String text;/***  附件路径*/private String filePath;public String getSendTo() {return sendTo;}public void setSendTo(String sendTo) {this.sendTo = sendTo;}public String getSubject() {return subject;}public void setSubject(String subject) {this.subject = subject;}public String getText() {return text;}public void setText(String text) {this.text = text;}public String getFilePath() {return filePath;}public void setFilePath(String filePath) {this.filePath = filePath;}
}

SendMailService

package com.ceam.web.components.service;import com.ceam.exam.dto.MailRequest;/*** @author CeaM* 2023/7/17*/
public interface SendMailService {/*** 简单文本邮件** @param mailRequest* @return*/void sendSimpleMail(MailRequest mailRequest);/*** Html格式邮件,可带附件** @param mailRequest* @return*/void sendHtmlMail(MailRequest mailRequest);
}

SendMailServiceImpl

package com.ceam.web.components.service.impl;import com.ceam.common.utils.AssertUtil;
import com.ceam.exam.dto.MailRequest;
import com.ceam.web.components.service.SendMailService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.stereotype.Service;import javax.annotation.Resource;
import java.util.Date;/*** @author CeaM* 2023/7/17*/
@Slf4j
@Service
public class SendMailServiceImpl implements SendMailService {// 注入邮件工具类@Resourceprivate JavaMailSender javaMailSender;@Value("${spring.mail.username}")private String sendMailer;public void checkMail(MailRequest mailRequest) {AssertUtil.isNotEmpty(mailRequest,"邮件请求不能为空");AssertUtil.isNotBlank(mailRequest.getSendTo(), "邮件收件人不能为空");AssertUtil.isNotBlank(mailRequest.getSubject(), "邮件主题不能为空");AssertUtil.isNotBlank(mailRequest.getText(), "邮件收件人不能为空");}@Overridepublic void sendSimpleMail(MailRequest mailRequest) {SimpleMailMessage message = new SimpleMailMessage();checkMail(mailRequest);// 邮件发件人message.setFrom(sendMailer);// 邮件收件人 1或多个message.setTo(mailRequest.getSendTo().split(","));// 邮件主题message.setSubject(mailRequest.getSubject());// 邮件内容message.setText(mailRequest.getText());// 邮件发送时间message.setSentDate(new Date());javaMailSender.send(message);log.info("发送邮件成功:{}->{}",sendMailer,mailRequest.getSendTo());}@Overridepublic void sendHtmlMail(MailRequest mailRequest) {
//        MimeMessage message = javaMailSender.createMimeMessage();
//        checkMail(mailRequest);
//        try {
//            MimeMessageHelper helper = new MimeMessageHelper(message,true);
//            //邮件发件人
//            helper.setFrom(sendMailer);
//            //邮件收件人 1或多个
//            helper.setTo(mailRequest.getSendTo().split(","));
//            //邮件主题
//            helper.setSubject(mailRequest.getSubject());
//            //邮件内容
//            helper.setText(mailRequest.getText(),true);
//            //邮件发送时间
//            helper.setSentDate(new Date());
//
//            String filePath = mailRequest.getFilePath();
//            if (StringUtils.hasText(filePath)) {
//                FileSystemResource file = new FileSystemResource(new File(filePath));
//                String fileName = filePath.substring(filePath.lastIndexOf(File.separator));
//                helper.addAttachment(fileName,file);
//            }
//            javaMailSender.send(message);
//            log.info("发送邮件成功:{}->{}",sendMailer,mailRequest.getSendTo());
//        } catch (MessagingException e) {
//            log.error("发送邮件时发生异常！",e);
//        }}
}

SendMailController

@RestController
@RequestMapping("/send-mail")
@Api(value = "发送邮件接口",tags = {"发送邮件接口"})
public class SendMailController {@Autowiredprivate SendMailService sendMailService;@PostMapping("/simple")public void SendSimpleMessage(@RequestBody MailRequest mailRequest) {sendMailService.sendSimpleMail(mailRequest);}@PostMapping("/html")public void SendHtmlMessage(@RequestBody MailRequest mailRequest) { sendMailService.sendHtmlMail(mailRequest);}
}